This is a very clever book, a murder mystery told from the perspective of a boy with autism-spectrum disorder. When the neighbour's dog is found dead on the lawn, he sets out to find the murderer. This would be fun to read for young adults as well as adults - I read it shortly after it first came out (so I was no young adult by any measure) and I really enjoyed it. The boy narrator is very thorough in his investigation, goes down interesting roads in order to find out what really happened, even faces some of his fears. The chapters are numbered only with prime numbers, which I thought was a nice touch. Having studied psychology for some time, I can say that Mark Haddon does a good job of showing the world through the lens of autism / Aspergers.